Six-pack cotton tank undershirts from Amazon Essentials, the in-house basics range that goes up against the likes of Fruit of the Loom and supermarket multipacks. This is the sort of everyday layer you wear under shirts, polos or knitwear to keep your outer clothes fresher and add a bit of comfort without bulk.

Who are these undershirts best for?

If you want a lightweight base layer, the sleeveless cut keeps things cooler than a tee while still giving you that soft cotton feel against the skin. Being 100% cotton, they’re breathable and familiar to wear, though they won’t dry as quickly as cotton-blend sports vests if you’re buying mainly for the gym.

• Pack size: 6 — useful if you want a week’s rotation without constant washing.
• Fabric: 100% cotton — comfortable for daily wear and kinder on skin than scratchier synthetics.
• Fit reference: Medium — worth checking the size guide if you’re between sizes for layering.